在执行器和源干扰下,使用比例积分未知输入观测者控制直流微电网的去中心化主动容错控制
Mohammed Said Ouahabi1, Said Barkat1, Abdelhafid Benyounes1
1Department of Electrical Engineering, Electrical Engineering Laboratory (LGE), University Mohamed Boudiaf M'sila, M'sila, 28000, Algeria.
Scientific reports
|April 24, 2025
概括
本研究提出了DC微电网的分散故障耐受性控制,在执行器故障和负载变化期间增强稳定性,而无需单元间通信. 该方法通过局部重建故障,确保可靠的操作.
科学领域:
- 电气工程 电气工程
- 控制系统 控制系统
- 可再生能源系统可再生能源系统
背景情况:
- 电流微电网对于整合可再生能源至关重要.
- 执行器故障,负载变化和源干扰挑战了微电网的稳定性和性能.
- 现有的耐故障控制方法通常需要通信或当前测量,从而限制了它们的适用性.
研究的目的:
- 引入DC微电网的分散式主动故障耐受控制 (AFTC) 技术.
- 解决执行器故障,负载变化和源干扰,而无需通信或电流传感.
- 确保系统稳定性,性能和在故障条件下高效运行.
主要方法:
- 一个去中心化的未知输入比例整体观察器 (UI-PIO) 用于准确的故障估计,坚固地承受负载变化.
- 基于线性二次调节器 (LQR) 的UI-PIO策略,以平衡控制性能和能源消耗.
- 利亚普诺夫稳定条件和线性矩阵不等式 (LMI) 技术,以确保闭环系统的稳定性.
- 分散的控制架构使本地控制器能够独立计算操作.
主要成果:
- 拟议的LQR-UI-PIO有效地估计和重建执行器故障.
- 控制策略保持系统稳定性和性能,尽管负载变化和源干扰.
- 硬件在循环 (HIL) 实现验证了该技术的效率和有效性.
- 这种分散的方法绕过了通信和当前测量的局限性.
结论:
- 开发的去中心化的AFTC技术为DC微电网提供了强大而高效的解决方案.
- 该方法成功检测,重建故障,并保持系统稳定性.
- 这种方法对更广泛的工业应用有希望,需要可靠的故障容忍度.
相关概念视频
Time-Domain Interpretation of PD Control
69
Proportional-Derivative (PD) control is a widely used control method in various engineering systems to enhance stability and performance. In a system with only proportional control, common issues include high maximum overshoot and oscillation, observed in both the error signal and its rate of change. This behavior can be divided into three distinct phases: initial overshoot, subsequent undershoot, and gradual stabilization.
Consider the example of control of motor torque. Initially, a positive...
Consider the example of control of motor torque. Initially, a positive...
69
Control Systems
960
Control systems are everywhere in contemporary society, influencing diverse applications from aerospace to automated manufacturing. These systems can be found naturally within biological processes, such as blood sugar regulation and heart rate adjustment in response to stress, as well as in man-made systems like elevators and automated vehicles. A control system is essentially a network of subsystems and processes that collaboratively convert specific inputs into desired outputs.
At the heart...
At the heart...
960
PI Controller: Design
136
Proportional Integral (PI) controllers are a fundamental component in modern control systems, widely used to enhance performance and mitigate steady-state errors. They are particularly effective in applications such as automatic brightness adjustment on smartphones, where they excel at mitigating steady-state errors for step-function inputs. Unlike PD controllers, which require time-varying errors to function optimally, PI controllers leverage their integral component to address residual...
136
PD Controller: Design
145
In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
145
PID Controller
80
Proportional-Integral-Derivative (PID) controllers are widely used in various control systems to enhance stability and performance. In a thermostat, it adjusts heating or cooling based on the temperature difference between the actual and desired levels. They are often used in automotive speed systems, effectively managing sudden speed changes while maintaining a constant speed under varying conditions. On the other hand, PI controllers, commonly employed in voltage regulation, enhance stability...
80
Load-frequency control
93
Load-frequency control (LFC) is vital for maintaining power system stability, ensuring that frequency and power flows remain within acceptable limits during load changes. Turbine-governor control eliminates rotor accelerations and decelerations following load changes. However, a steady-state frequency error persists when the change in the turbine-governor reference setting is zero. In an interconnected power system, each area agrees to export or import a scheduled amount of power through...
93


